There was a
religious system called the Mosaic Dispensation because God gave this law
of governing to Moses on Sinai and through him to the singular nation of
Israel. It was not a system for all mankind but exclusively for Israel.
There was a written law and it governed Israel until the time of the
system of Christ, approximately fifteen hundred years. Most Bible students
know this but many still turn to the Mosaic system to justify some of
their religious ordinances.

Since the cross of Christ, at which time the Mosaic system was
taken away (Col. 2: 14), nobody has lived subject to the Mosaic Law but
accountable to God through Christ (Heb. 1: 1,2).

This system began on the first Pentecost after His ascension and
will continue until the end of time. All men shall be judged by the
doctrine that came through Christ and those who were authorized to speak
in His name. Knowing this, and living by it, are two separate
matters.